Thread extractor for weft replenishing looms



Aug. 4, 1931. A. A. GORDON THREAD EXTRACTOR XFOR WEFT REPLENISHING LQOMS Filed July 22', 1929 vfi 4 4 4455/? 7-4 4% W33 M /7' FOP/145%? Patented Aug. 4, 1931 STATES ALBERT A. GORDON, OF WORCESTER, IvIASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOVJIJFS 1489M WURKQ, CZ ORCE-STEP, IIIASSECHUSETTS, A CGRPOPJLTIUN O13 MASSACHUSETTS THREAD EXTRACTOR FGR REPLENlSH-ING LOOMS Application filed J'uly 2'2,

' moved from the magazine in a horizontal direction rearwardly toward the lay to be inserted through a binder into the shuttle. The binder in this type of loom usually has two spaced parallel shuttle en aging arms which are connected together their inner ends so as to cooperate with the protector linger. it is a more particular object of my present invention to provide a thread extractor movable transversely of the iay to move in a path which starts at a point behind the thread of a freshly transferred bobbin and across the point of juncture of the binder so that the binder is made to assist in withdrawing the weft end after the same has been cut at or near the selvage.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth- Fig. 1 is a top plan view of one end of a loom showing my invention applied thereto,

F ig. 2 is a front elevation of the structure shown in Fig. 1 showing the thread extractor in full lines in its starting position and in dotted lines in its finishing position when withdrawing a thread, and

Fig. 3 is a detailed vertical section on line 3-3 of Fig. 2.

Referring to Fig. 1 I have shown a loom frame-1O having secured thereto the foot 11 of a magazine M. The latter holds a plurality otreserve bobbins B the tips of which are guided by an end plate 12. The latter is slot-ted as at 13 so that the weft ends W from the reserve bobbins may extend toward the thread holder 14. The holder is mount 1929. Serial No. 380,178.

ed on an extension 15 of one of the tie rods of the magazine. The thread holder is spaced from the magazine plate 12 as shown in Fig. 1 and is forward of the lay L when the latter is in its foremost position.

The lay has guides 16 and 17 between which moves vertically a gang of shuttle boxes 18. I have shown in Fig. 2 provision for three shuttles 19, 20 and 21, respectively, to be raised and lowered by the shuttle boxes 18. No mechanism is set forth herein for ell'ecting the movement of the boxes but it is to be understood that they can be moved by well known mechanism so that any of the shuttles will be opposite the race plate 22 and in picking position. A connector 23 attached to the lay and driven by the crank shalt not shown may be the means for moving the lay back and forth.

The binder 24 has two substantially parallel shuttle engaging arms 25 and 26 spaced suillciently as shown in Fig. 2 to permit the transfer therebetween of a full bobbin B. The outer or left hand ends of the binder as viewed in Fig. 1 are pivoted as at 27, while the inner end is provided with an extension 28 formed integrally with the arms 25 and 26. This extension is operatively connected to a protector finger 29 which is ellective to stop the loom shouldthe shuttle be improperly boxed.

The matter thus far described 01": itself forms no part of my present invention and may be substantially as set forth in my copending application Ser. No. 291,541.

In carrying my invention into effect I secure to the under side of the lay a small stand 10 and mount therein a forwardly extending stud ll. Pivotally mounted on the stud is a lever 1-2 operativcly connected to a torsion spring 13, one end of said spring being secured to the stand 12 so as to tend to move the lever 42 in a counter-clockwise direction as viewed in F ig. 1. The lower end of the lever is provided with a roll 14 to cooperate with a fixed cam 45 secured to the 100111 frame as at 46 and extending rearwardly and outwardly.

Projecting upwardly from said lever and secured thereto is a wire 4-7 having a hooked end 48 which points inwardly with respect to the lay. A cotter pin or similar device 49 may be employed to prevent the lever from moving too far to the right as viewed in Fig. 3.

The wire 47 normally lies adjacent the binder 24 and during the back and forth motion of the lay the roll 44 will slide over the cam 45 insuch a way as to move the finger or extractor 47 from the full to the dotted line position shown in Fig. 2 as the lay moves rearwardly. It will be seen from Fig. 2 that the normal position for' the extractor when the lay is in its foremost position is to the left of and below the path traversed by a bobbin being transferred into the active shuttle.

During the operation of the loom the extractor will move as previously described, havin the llIWLICl' motion ositlvel as a result of the cam 45 during the backward motion of the lay and being moved outwardly under influence of spring 48 on the forward stroke of the lay. At the time of replenishment one of the reserve bobbins B will be moved rearwardly by mechanism not shown herein but'set forth in the aforesaid application, the bobbin'moving over the extractor 47 and at a time when the lay is in its foremost position. The weft end extending from the reserve bobbin will move rearwar dly with the bobbin, passing over the hooked end 48. As shown in Fig. 2 the point of attachment for the weft end a with the conical wind on the bobbin will at C will cut the weft close to the selvage of the cloth.

The cutter is not set forth partioularly herein as the same may be of any approved form. On the following backward stroke of the lay the extractor 47 will start to move in a path which as set forth in Fig. 1 is behind the weft end in position 50 and as the lay recedes the hook 48 will move to the right and engage the weft end to withdraw the same from the box. As shown in Fig. 2 the hooked end 48 will move to a position to the right of the end of the slot between the arms 25 and 26, thereby requiring the extension28 to assist in withdrawing the weft end.

From the foregoing it will be seen that I have provided a very simple thread extraotor which is effective on the rearward stroke fthe lay to engage the filling end of a transferred bobbin and cause the same to reeve around a portion of the shuttle binder, thereby requiring said weft end to move out of the shuttle box.

Having thus described my invention it will be seen that changes and modifications may be made therein by thoseskilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, 7

but what I claim is:

1. In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder to which is attached he weft ends extending from the reserve bobbins, a lay, a thread extractor pivoted to the lay and movable in a substantially vertical plane inwardly with respect to the length of the lay during the rearward movement of the latter, and means carried by the lay and in substantial horizontal alignment with a portion of the path of the movement of the extractor and lying behind the latter to engage the weft end of a transferred bobbin when said end is moved thereagainst by the extractor to be moved along the lay.

2. In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder to' which is attached the weft ends extending from the reserve bobbins, a lay, a split shuttle binder through whicha reserve bobbin passes when being transferred, a thread extractor carried by the lay and movable in a substantially vertical path which starts from a position behind the weft end of the transferred bobbin and engage said weft end when moving inwardly, the extractor and binder cooperating to move the weft endforwardly through the split portion of the binder.

3(In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder to which is attached the weft ends extending from the reserve bobbins, a lay, a shuttle box, a binder therefor. having two spaced shuttle engaging portions to define between them a slot, said arms being attached to a binder extension located at the inner end of said binder, a thread extractor pivotally mounted on the lay and movable in a substantially vertical path which starts from a position behind the weft endof a freshly transferred bobbin, and means operative during the rearward movement of the lay to cause the extractor to move inwardly and in a direction substantially parallel to the binder to engage the weft end of a transferred bobbin and cause said end to reeve around the extension of the binder.

'4. In a weft replenishing loom, a'magazine to hold reserve bobbins, a thread holder to which is attached the weft ends extending from the reserve bobbins, a lay, a shuttle binder carried by the lay and formed of two spaced arms between which is located a slot through which a bobbin is transferred,

said arms terminating at their inner ends in a binder extension, a thread extractor pivoted to the lay and movable in a vertical path substantially parallel to the arms of the hinder and movable during the rearward movement of the lay across the path traversed by the weft end of a transferred bobbin to engage said end and move the same against the extension to cause the latter to assist during the movement of the extractor to move the weft end forwardly through the slot.

5. In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder to which is attached the weft ends extending from the reserve bobbins, a lay, a split shuttle binder having two substantially parallel shuttle engaging arms between which is located a slot through which a bobbin is transferred, a binder extension common to the arms and located at the inner end of the binder, a thread extractor pivoted to the lay and movable in a substantially vertical plane in a path which starts at a point behind the weft end extending from the thread holder to a transferred bobbin, means effective during the backward movement of the lay to cause said extractor to move across the path of the thread and move the same against the extension to cause the thread to reeve around said extension and be withdrawn forwardly through the slot between the binder arms.

6. In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder to which is attached the weft ends extending from the reserve bobbins, a lay, a split shuttle binder having two substantially parallel shuttle engaging arms between which is located a slot through which a bobbin is transferred, a binder extension thread and move the same against the extension to cause the thread to reeve around said extension and be withdrawn forwardly through the slot between the binder arms, said means including a fixed cam which is jinclined rearwardly and outwardly with respect to the lay.

7 In a weft replenishing loom, a magazine to hold reserve bobbins, a thread holder beyond the tip ends of the bobbin to hold the weft ends extending from said bobbins, a lay movable therein, and a thread extractor mount-ed on the lay having a positive movement in addition to the movement of the lay and operative during the rearward movement of the lay to engage the weft end to draw the same out of the path of the shuttle, the extractor moving in a path which lies wholly between the tip ends of the reservebobbins and the central portion of the loom whereby the said extractor will be out of the path of the weft of a bobbin being transferred.

8. In a weft replenishing loom, a set of shifting shuttles and shuttle boxes therefor, any one of which may move to or away from active position on any pick of the loom, a shuttle binder for the shuttle box in active position, means to store reserve bobbins, a thread holder for the weft ends extending from the rcserre bobbins, said binder having a slot therfin through which one of the reserve bobbins may pass into the active shuttle, and a thread extractor having a weft end withdrawing movement in direction from the thread holder toward the selvage, the weft end of any transferred bobbin in any of the shuttle boxes being out of the path of the extractor until after picking.

9. In a weft replenishing loom having provision for storing reserve bobbins, a set of shifting shuttle boxes each capable when in active position of receiving a fresh bobin and thereafter moving to inactive position prior to picking of the loom, a thread holder to which are attached the weft ends of newly transferred bobbins in the shuttle boxes in both active and inactive position, and a thread extractor adjacent the shifting boxes movable in a path parallel to the movement of the shuttle to engage only the weft end of the bobbin in the active shuttle on the rearward stroke of the loom.

10. In a weft replenishing loom, a magazine tohold weft bobbins, a thread holder to hold the weft ends extending from the bobbin, a lay, a shuttle movable on the lay and having a bobbin therein, a weft end of which extends to the holder, a thread extractor mounted on and movable with the lay to have engagement with the weft ends, and means in addition to the lay to move the extractor into engagement with the weft end to withdraw the same from the shuttle as the latter moves rearwardly.

11. In a weft replenishing loom, a magazine to hold weft bobbins, a thread holder to hold the weft ends extending from the bobbin, a lay, a shuttle movable on the lay and having a bobbin therein, the weft end of which extends to the holder, a thread extractor mounted on the lay and movable in a direction parallel to the movement of the shuttle to have engagement with the weft ends, and means addition to the lay to move the extracto into engagement with the weft end to withdraw the same from the shuttle as the lay moves rearwardly, said means being stationary.

12. In a weft replenishing loom having a lay and shuttle and reserve bobbins from which extend weft ends, a thread holder to which the weft ends are attached, and a threadextrasctor movable across the path of I weft ends extending from the holder to the shuttle to engage said weft end and move the same out of the path of the shuttle as the lay moves rearwardly.

13. In a weft replenishing loom, a magazine to hold reserve bobbins to be transferred, a thread-holder beyond the tip ends of the bobbin to hold the weft ends extending from the bobbins, a lay, and a thread extractor mounted on the lay and having a portion lying behind the weft end which extends from the thread holder to the transferred bobbin after the latter has been picked to the opposite side of the loom and operative during the rearward movement of the lay to engage said weft end to draw the same out of the path of the shuttle.

In testimony whereof I have hereunto aflixed my signature.

' ALBERT A. GORDON. 

